Seeking looking game like goodbye eternity

Oct 21, 2023
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Dumb question probably, but does anyone know the program(s) used to make the 'Goodye Eternity' artstyle?
Great question! It has such a unique, alive and bright texture... And the animations look so fluid. I guess it might be what everyone else in the industry uses as well, but with some personally crafted amazing shader or whatever.
But still, would be great to know specifics.